Patents by Inventor Leroy H. Carlson, Jr.

Leroy H. Carlson, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Diecutting roll system with improved scrap disposal capability
    Patent number: 4613321
    Abstract: A tandem arrangement of diecutting rolls severs scrap from a traveling web in two steps, each of which steps effects cutting entirely through the web, but at different peripheral locations. The partially cut scrap is carried with the remainder of the web from the first roll to the second, and any severed piece that lodges within the cutting element of the second roll is removed by the action of a mechanical scraper, which passes therethrough.
    Type: Grant
    Filed: September 6, 1985
    Date of Patent: September 23, 1986
    Assignee: Preston Engravers, Inc.
    Inventors: Martin Kesten, Leroy H. Carlson, Jr., Gary L. Kwader
  • Rotary cutting dies with vacuum assist to cut and clear waste
    Patent number: 4599926
    Abstract: A die-cutting roll is constructed to cut holes in traveling web materials, and for clearing and discharging the fragments, in a highly effective manner. A multiplicity of air vent ports communicate with the channel through which the scrap moves to an internal axial passage of the roll, and supplement the effect of vacuum applied to one end thereof. Desirably, a disuniting effect is produced upon compacted formations strands of the removed material, by creating turbulence within the passage and/or by mechanical impact thereupon.
    Type: Grant
    Filed: July 16, 1984
    Date of Patent: July 15, 1986
    Assignee: Preston Engravers, Inc.
    Inventors: Leroy H. Carlson, Jr., Martin Kesten